EHRflex is an archetype-based clinical registry system (EHR) independent of a particular reference model. It uses clinical archetypes as guidelines for the automatic generation of web interfaces, oriented to a clinical use and data introduction.
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The Tolven platform and ePHR and eCHR applications enable interoperability across electronic health records for consumers and clinicians. Using Java, EJB3, Faces, Facelets, AJAX, relational database, and LDAP for security.
Symbiosys is an implementation of PatientOS where the UI layer uses with Eclipse's RCP, JFace and SWT Widget libraries to achieve native look and feel of the gui at runtime.